Question

Lidocaine maintenance infusion for stable wide complex tachycardia

A)1-4 mg/min
B)1mg/3-5 minS
C)2-5 mcg/kg/min
D)5-10 mcg/kg/min

Answer 1

The correct lidocaine maintenance infusion rate for stable wide complex tachycardia is 1-4 mg/min, which is different from the use of potassium chloride in open-heart surgery.

Step-by-step explanation:

The correct maintenance infusion rate for lidocaine to treat stable wide complex tachycardia is 1-4 mg/min. The other options provided (1 mg every 3-5 minutes, 2-5 mcg/kg/min, and 5-10 mcg/kg/min) are not standard maintenance infusion doses for lidocaine in this scenario. Lidocaine is a class 1b antiarrhythmic drug used to treat ventricular arrhythmias. It is important to note that potassium chloride (KCl) is used in a very different context: It is injected directly into the cardiac muscle to stop the heart during open-heart surgery. This is a critical step to provide a motionless field for the surgeons to operate on the heart.